An individual with achlorhydria (lack of or low gastric acid in stomach) may have abdominal pain due to difficulty digesting food, loose bowel movements & problems due to poor absorption of nutrients.
Foods for Good Digestion # 5: Sweet potatoes. Sweet potatoes, especially when consumed with their skins on, are a superb food for digestive health. They provide dietary fiber, complex carbohydrates and manganese. Sweet potatoes help in treating peptic ulcers, duodenal ulcers and some other serious bowel ailments.
Best: Fennel seeds. Fennel is a digestive tract savior. The seeds have a compound that relaxes GI spasms, which allows gas to pass and relieve bloating, says Sass. You can find fennel and fennel seeds in breads, sausages, and other meat dishes.